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  • Maria Langermlanger@mastodon.world
    Jun 19, 2026, 1:36 AM

    @dec23k @tomsart That's kind of what they said in the video: that it's actually causing physical harm to people even though they can't hear it. I wish there was a way to measure and record it.

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  • sebzsebz@chaos.social
    Jun 19, 2026, 7:26 AM

    @mlanger @dec23k @tomsart

    There are microphones on the market that can record sounds below 20hz. Also with software such as audacity you might be able to change the pitch so other people can hear it. There also is spectrum analysis software out there to visualize anything you record.

    Maybe get in contact with a local university as this equipment is most commonly used in research (as far as i know)

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  • Dec [{(:no_ai:)}]dec23k@mastodon.ie
    Jun 19, 2026, 11:21 AM

    @sebz @mlanger @tomsart
    In 2018, I installed an app called Infrasound Detector on what is now a very old (but still working) Android tablet. This tablet no longer gets OS updates (and it's not supported by Lineage / Replicant / postmarketOS) but the apps that are still on it all work offline.

    I just tested the app now, and it still works.

    play.google.com/store/apps/det

    Unfortunately, it won't install on a modern Android OS. The developer last updated it in 2018.

    I'll check for free alternatives.

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  • Dec [{(:no_ai:)}]dec23k@mastodon.ie
    Jun 19, 2026, 11:34 AM

    @sebz @mlanger @tomsart
    After a quick look on the Play Store, all the apps that I can find are pay-only, freemium, and cloud or AI powered.

    (spoiler: infrasound can be detected and translated offline and without using any AI models)

    Luckily we have alternatives to the Play Store.

    It looks like F-Droid does not have any apps matching the search string "Infrasound"

    Well, that's all I have time for now.

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  • sebzsebz@chaos.social
    Jun 19, 2026, 4:18 PM

    @mlanger @dec23k @tomsart
    You might just want to try to record the sound as usual with your tablet and then load it into audacity or similar software (i think even vlc should work)
    Then you just modify the pitch to +100% (+ 1 octave) which should make the sound audible for others too.

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  • HierarchyHierarchy@mastodon.social
    Jun 26, 2026, 5:53 AM

    @dec23k @mlanger @sebz @tomsart are the energy storage the wheels that push up the cylinders for energy storing? Also is it expected from the gas powered turbines that tehy can go below 20hz? I dont know if they act similar way than the emergency gas turbines that the energy grid uses when they run out? Those are not low hw I believe

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